Ionic has built in Glonass GPS where the Blaze you need to run with your phone for GPS Speed and Distance (AKA connected GPS)

Ionic offers Fitbit Pay - (limitations to which cards are compatible & merchants) the Fitbit Ionic has an NFC chip, similar to the Apple Watch, and therefore it works with terminals that accept this form of cardless payment.

Water resistant to 50M (no other Fitbit offers water resistant except the Flex 2)

Our 5 point review

Fitbit Blaze is a cheaper alternative if budget is a factor

Fitbit Ionic is has alot of great new features, however alot of this technology is not new to the industry and can be found in other brands for less.

Fitbit Ionic is offers about 10 hours of GPS battery life, if using music less than 10 hours. Non GPS usage about 4-5 days.

Fitbit Ionic is easy to set up, has preloaded workouts and sleek design and water resistant.

Like Apple is to Smart Phones, Fitbit is still considered the industry leader in Fitness Trackers and has developed such a following of loyal clients whom will continue to purchase the latest and greatest. The Fitbit Ionic is clearly the best Fitbit has to offer and we give 4/5 star rating. Get yours here

The biggest difference between the Fitbit Surge and Fitbit Blaze is that the Surge has built in GPS, while the Blaze can use your phone's GPS.In order to dig into this further, we now have to assess the latest edition to the Fitbit Family which is the Fitbit Ionic Smartwatch with GPS.

To answer some common questions, here are some facts defining the models.

1. Both trackers use the same PurePulse™ Heart Rate Technology. - Continuous, automatic heart rate tracking right on your wrist—only from Fitbit.

2. Both have exercise shortcuts for: Walk, Run, Cycling, and Elliptical. What's important to keep in mind is that the Surge can use it's on-device GPS for Walk, Run, and Cycling; while the Fitbit Blaze depends on your phone's GPS to map out these workouts.

Some of the less apparent differences about the Blaze include:

-Calendar notifications.

-Call/text notifications and music control only require a single Bluetooth bond (Surge requires a separate bond for each).

-On-device FitStar workouts.

-The Blaze can control music volume. Fitbit Ionic allows you to internally store appox 300 songs so no need to run with your phone.